A print media stacker assembly comprises a housing having an opening therein. A tray, disposed within the housing downstream of a feeder, has a front lip, a collecting portion, and a back wall. A stopper lever is in operative relationship with the tray a distance upstream from the back wall. The stopper lever has a first position in which the stopper lever prevents media sheets from passing beyond the stopper lever and a second position in which the stopper lever permits media sheets to pass beyond the stopper lever.